package com.itheima.provider.controller;

import com.itheima.provider.domain.Goods;
import com.itheima.provider.service.GoodsService;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Date;

/**
 * Goods Controller 服务提供方
 */

@RestController
@RequestMapping("/goods")
public class GoodsController {

    @Autowired
    private GoodsService goodsService;

    /**
     * 降级：
     * 1. 出现异常
     * 2. 服务调用超时 默认1秒
     */
    @GetMapping("/findOne/{id}")
    @HystrixCommand(fallbackMethod = "findOne_fallback", commandProperties = {
            //超时时间，默认1s
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000"),
            //监控时间，默认5000ms
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "5000"),
            //失败次数，默认20次
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "20"),
            //失败率，默认50%
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "50"),
    })//制定降级后调用的方法。设置超时时间。
    public Goods findOne(@PathVariable("id") int id) {

        //如果id == 1，则出现异常
        if (id == 1) {
            //手动造异常
            int i = 1 / 0;
        }

        try {
            //休眠2秒
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        Goods goods = goodsService.findOne(id);

        goods.setTitle(goods.getTitle() + ":" + port);//将端口号，设置到了 商品标题上
        return goods;
    }

    @Value("${server.port}")
    private int port;

    /**
     * 定义降级方法：
     * 1. 方法的返回值需要和原方法一样
     * 2. 方法的参数需要和原方法一样
     */
    @GetMapping("/findOne_fallback/{id}")
    public Goods findOne_fallback(@PathVariable("id") int id) {
        Goods goods = new Goods();
        goods.setTitle("降级了...");
        return goods;
    }
}
